The Day Tucker Became His Sister

by Wolverine

Part I

 

One day Tucker was lying in his room watching television. Suddenly a strange sensation shot through his body. He was paralyzed. A voice came into his head. It was his sister's, Whitney.

"Get me a bra and some underwear. Then you can get the clothes I ask for. Better yet, I'll get them when you're changed. Still, get the bra and panties because your... I mean my pussy will be sopping wet and I hate my boobs sagging," said Whitney's voice. Tucker felt sickened at these things.

"What the fuck is going on here? Where'd you come from?" asked Tucker in response.

"Don't ask questions. I'll explain after you get the clothes. Just know you're going to turn into me."

"Why should I help you? You're gonna change me anyway. I won't do it." Tucker almost took back that last comment as the excruciating pain hit him all over his body.

"I can do things that you won't like. Taking over your mind is kinda like writing something on a piece of paper with a pencil. My mind writes over yours and then it gets "erased." I copy it though, so I can talk to you while your you. Then, I rewrite my mind onto yours and the process starts all over. Since my persona is just yours with different memories and preferences, you'll remember being me and realize it was you that does these horrible things. I'm sure Mom will be up for some lesbian action with some help from my "special formula" breast milk. Believe me, I can make plenty of milk with the chest I'll have." Tucker suddenly felt incredibly horny. He wanted a big chest! No! He thrust the thought away.

"I'll do it on two conditions. One, no involvement of Mom or Dad. Two, never make me feel the way I just did again."

"Okay, deal. I'll release you for now, but I can't hold myself back forever." Tucker snuck into his sister's room. He searched through her bag that she was using for her weekly visit to the house. She was in college and had moved out. She still came down to visit and still used this underwear. As a matter of fact she was coming that weekend. Hopefully she wouldn't notice the underwear was gone right away. Tucker returned to his room and locked the door.

"Now lay down. This is going to feel weird and painful. Keep the lingerie close. When you develop my "new parts", I want you to put them on." Tucker laid down and set the lingerie beside him.

"Now what?"

"Now you're going to become me. Don't ask why. It's kinda genetic and it's kinda part of a curse. I'm gonna have fun with your friends. Especially Patrick. Sorry, but you're gonna have an irresistible urge to *ahem* finger yourself. Tweak my nipples please. I need them hard and erect. And don't waste my milk." Tucker didn't want to have sex with Patrick.

"No...wait...ahhh!" Pain shot through his body. Tucker's hands went absently to his shirt. He ripped his shirt off. He looked in fear at his chest. It started itching. His nipples darkened and enlarged. He touched one of them. Pleasure shot throughout his body and blended with the pain. His penis went hard and then was sucked into his crotch. He felt the pubic hair doubling and his genitalia rearranging itself. His chest rose slightly, forming small mounds on his chest. He groaned. His voice faded between Whitney and his own. His hands shrunk. Fingernails grew. He ran his hands down his sides to his hips. They popped as they started to widen. He screamed softly. He noticed his hair grow out to shoulder length. Burning spread through his face. It shifted into Whitney's. The forehead pushed out and his face became softer and his lips were fuller. His ass started protruding. It curved into a nice round ass. He had a perfect ass now! The mounds on his chest grew to a C-cup. The urge for panties and a good fingering became unbearable. He pulled off his pants. Then he removed his underwear. Juices ran down his legs. His body hair receded into his body. He slipped on the panties. His mind was deep into Whitney's. He uncontrollably reached into his pussy. He hair grew to full length around his ass. His breasts came upon the border of C and D. The last of Tucker's persona was becoming Whitney. That part of his mind fought back to stop him from finding the clit, but it was too late. Tucker became Whitney. Her breasts reached their full size of D.

Whitney felt stupid about wanting to be Tucker. She decided to punish her male stupidity by fucking Mom. She felt her breasts lactate and her nipples harden. She gently pulled off her bra and picked up a nearby used glass. She milked milk into the glass. Perfect! She went to find Mom. Whitney didn't even bother to wear her bra. Her panties slipped off because of her wetness. She was nude and it felt great! She went up behind Sherry(Mom) and reached around to her crotch. Sherry's eyes went wide with surprise. Whitney grabbed Sherry's head and pumped the milk in. Sherry spun to face Whitney.

"Whitney! What's wrong with you? That milk tasted weird. Where did it come from and where are your clothes? Look your crotch is running with juices. What the hell have you been doing? Wait. No! You didn't just give me breast milk, did you? That's sick. Get some clothes on now! I'm taking you to a doctor, but right now I need a...a...some action! What? I mean... I'm feeling a little weird. Fuck me Whitney! Right now!" The milk took complete control. Sherry became a nymphomaniac in just few seconds. The milk also boosted her stamina so she was multi-orgasmic She ripped off her clothes. She was a middle-aged woman, so her breasts were sagging and were about a cup smaller than Whitney's, but Whitney was horny! Whitney attacked Sherry and they fucked for the next four hours.

* * *

 

Tucker awoke the next morning wearing Whitney's panties. He felt weak and drowsy. His head hurt. He turned his head to the right. Laying beside him was his mom nude. Tucker covered his mouth, so he wouldn't scream. He quickly got off the bed and left the room. In the hallway the real Whitney bumped into him.

"What the hell? I thought some of my underwear was missing! You're wearing my panties! Take them off and get your clothes on now. I'm telling Mom about this," yelled Whitney. Tucker felt scared. Whitney was going to tell Mom. He could remember all of the sex. She had promised!

"Grab her boobs!" yelled Whitney's voice in his head.

"What? No! She's my sister!"

"Get the milk by the bedside. Grab her boobs and force her to drink it. Then, fuck her."

"No." Tucker felt a weird sensation come over him.

"I was afraid I'd have to do this. All your genes from Dad are disappearing. I'm withholding them. I filled them in with my genes from Mom. Soon you'll be her. A modified slut version, but her nonetheless. You can stop this though. Do my original command. Tucker felt hair slide down his back. His frame became more feminine.

"Okay! Just don't make me he...he slut Mom."

"Okay. Here I'll give you boost." Tucker started to feel horny. He lusted his sister!

"I want her!" Tucker went after Whitney into her bedroom.

"Oh my god! Mom! What? Tucker? What are you doing?" Tucker grabbed Whitney's right breast and squeezed. As she screamed, he poured the milk in. Whitney's eyes went wide. She fought the milk as it took control. Then, she finally gave in and unhooked her bra.. She pulled off her shirt and they fucked. She gave him tons of blowjobs and her mouth soon oozed sperm. Then, the urge stopped.

"What have I done?" Whitney started convulsing.

"Watch this. She's losing Dad's genes. Soon she'll be Mom. It's what was going to happen to you. Do the same thing to Mom and it will have the opposite effect and will turn her into me." The urge to fuck his mom took over Tucker. He fucked his Mom over and over. Soon she started to convulse. He looked over at the real Whitney. Her breasts were down to Mom's size and he saw the last of her mind disappear. A slutty look came into her eyes. Te opposite happened to Sherry and her breasts grew to a D and Whitney took over. Tucker felt his urge to fuck disappear and his body start to ache. Whitney was taking over again. After they had a huge orgy, Whitney fell asleep.

* * *

 

Tucker woke up early the next morning. It was a school day. Transformed or not he couldn't miss it. It was the last day, but he had already missed enough early on. He ran out into the hallway and jumped over his dead dad(Whitney had found Wes boring so she killed him) and passed up his "mom" and "Whitney" eating each other out. He was dressed and ready to go. He picked up his pack and started for the door.

"Carry a bra and some panties in case I need to fuck. And put on the panties under your clothes. Just in case," said Whitney's voice.

"Happy now?" Tucker asked after getting the lingerie. He barely got on the bus.

Tucker acted calm the whole day even though the current events were a bit unnerving. He made it through the whole day until 4th period. The bell was thirty minutes away and he would be free for the summer.

"There are some hot guys I need to fuck here."

"No! Not now. Please...no...ahhh." The transformation had already begun. Whitney started to emerge. Tucker/Whitney was already screwing one boy before her breasts were done.

"No! Fuck me! No! I'm not Whitney. I'm...not...Whitney. I don't want to fuck...wait I do want to fuck! Yes! Whitney's persona began to emerge as his shirt tightened. Tucker disappeared. Whitney fucked all the boys then killed them. Luckily she was able to slip away undetected and left no fingerprints.

 

TO BE CONTINUED...

  

  

  

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